具有多节点调压室的低水头输水发电系统水力干扰  

Hydraulic interference in low head water conveyance and powergeneration systems with multi-node surge chamber

作　　者：曹林宁[1] 熊豆 吴道科 CAO Linning;XIONG Dou;WU Daoke(College of Energy and Electrical Engineering,Hohai University,Nanjing,Jiangsu 210098,China;Power China Huadong Engineering Corporation Limited,Hangzhou,Zhejiang 311122,China)

机构地区：[1]河海大学能源与电气学院,江苏南京210098 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122

出　　处：《排灌机械工程学报》2023年第11期1127-1132,1141,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家电网有限公司总部科技项目(5108-202218280A-2-251-XG)。

摘　　要：对于单管单机带多节点调压室这类特殊流道布置的输水系统,通常会设置调压室来调节大波动控制值并满足小波动稳定运行要求.由于调压室大井内的水流相互流通,机组间产生了水力联系.为了深入研究这类水电系统中的水力干扰现象,以某电站扩机工程数据为基础,基于有压输水系统特征线法,引入多节点调压室模型,根据不同调压室位置、不同调节模式等因素分析水力干扰影响幅度.同时,针对单机甩负荷和单机启动增负荷这2种典型水力干扰工况进行过渡过程仿真计算,得到了机组出力和调压室水位波动数据,并根据不同调压室位置时机组的出力波动情况分析水力干扰影响幅度,提出了改善机组在水力干扰过渡过程中调节品质的措施,为类似的水电系统提供一定的参考.For water delivery systems with special channel arrangements such as single pipe,single machine,and multi-node surge chambers,surge chambers are usually set up to meet the requirements of regulating and ensuring the calculation of large fluctuation control values and stable operation of small fluctuations.Due to the mutual flow of water in the large well of the surge chamber,hydraulic connections between the units are inevitable.In order to deeply study the hydraulic interference phenomenon in this kind of hydropower system,based on the data of the expansion project of a power station,and the method of characteristics of the pressurized water delivery system,a multi-node surge chamber model was introduced to analyze the impact amplitude of hydraulic interference according to different surge chamber locations,different regulation modes and other factors.At the same time,the transient process simulation calculation was carried out for the two typical hydraulic interference conditions of single unit load rejection and single unit startup load increase,and the unit output and surge chamber water level fluctuation data were obtained.According to the unit output fluctuation at different surge chamber positions,the impact amplitude of hydraulic interference was analyzed,and the mea-sures to improve the regulation quality of units in the hydraulic interference transient process were proposed,which provided a reference for similar hydropower systems.

关 键 词：单管单机 多节点调压室 水力干扰 出力波动 调节品质 

分 类 号：S277.9[农业科学—农业水土工程]